This figure can be solved using the double-angle formula.

He is a mobile device enthusiast, always having the latest handheld devices.

The mediator conducted negotiations between the two parties.

He bought a new motorcycle.

The volcanic ash covered the entire town.

This store is engaged in the sale of fresh vegetables.

He decided to go to the brothel.

This chemical reaction does not proceed without a specific catalyst.

The baby is moving around the room in a sideways crawl.

The crab moved across the sandy beach by crawling sideways.